12212010224221 has 2 divisors, whose sum is σ = 12212010224222. Its totient is φ = 12212010224220.

The previous prime is 12212010224191. The next prime is 12212010224261. The reversal of 12212010224221 is 12242201021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12066383268900 + 145626955321 = 3473670^2 + 381611^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212010224221 - 2¹⁹ = 12212009699933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212010224192 and 12212010224201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212010224261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106005112110 + 6106005112111.

It is an arithmetic number, because the mean of its divisors is an integer number (6106005112111).

Almost surely, 2^{12212010224221} is an apocalyptic number.

It is an amenable number.

12212010224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212010224221 is an equidigital number, since it uses as much as digits as its factorization.

12212010224221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12212010224221 its reverse (12242201021221), we get a palindrome (24454211245442).

The spelling of 12212010224221 in words is "twelve trillion, two hundred twelve billion, ten million, two hundred twenty-four thousand, two hundred twenty-one".